- Definitions|2
- Thesaurus|2.1k
- Abbreviations|0
54 entries under problematical topic. ×
| awkward(adjective, difficult, demanding, problematic, grueling) | |
| bothersome(adjective, hard, tough, severe, difficult) | |
| challenging(adjective, hard, great, tough, severe) | |
| irksome(adjective, dull, difficulty, difficult, heavy) | |
| difficile(adjective, tough, severe, rough, difficult) | |
| hairy(adjective, hard, severe, rough, difficult) | |
| mean(adjective, hard, severe, rough, difficult) | |
| merciless(adjective, tough, severe, rough, difficult) | |
| murder(adjective, hard, great, tough, severe) | |
| testing(adjective, tough, severe, difficult, violent) | |
| unsparing(adjective, tough, rough, difficult, harsh) | |
| uphill battle(expression, adjective, tough, rough, difficult) | |
| scabrous(adjective, tough, rough, difficult, heavy) | |
| slavish(adjective, tough, rough, difficult, heavy) |
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| APA | Smart Define. (2016). arduous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/arduous/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "arduous thesaurus" https://smartdefine.org/arduous/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, arduous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/arduous/thesaurus/synonyms>. |
| MLA | Smart Define. "arduous thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/arduous/thesaurus/synonyms> |